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United States Patent | 5,095,821 |
Merz | March 17, 1992 |
The fragmentation casing has a one-piece hollow body (1) that incorporates nominal break points; this hollow body (1) is divided at least in one section (4) by at least one separating cut (5) that forms a separating gap. The separating cut is so made that the hollow body remains in the form of a one-piece structure. The surfaces of the separating cut that are adjacent in the separating gap are brought into contact with each other and are so fixed in contact with each other.
Inventors: | Merz; Karl (Reinach, CH) |
Assignee: | HUG Interlizenz AG (Zurich, CH) |
Appl. No.: | 381747 |
Filed: | June 14, 1989 |
PCT Filed: | September 9, 1988 |
PCT NO: | PCT/CH88/00157 |
371 Date: | June 14, 1989 |
102(e) Date: | June 14, 1989 |
PCT PUB.NO.: | WO89/03500 |
PCT PUB. Date: | April 20, 1989 |
Oct 14, 1987[CH] | 4023/87 |
Current U.S. Class: | 102/493; 86/53; 102/389; 219/121.69 |
Intern'l Class: | F42B 012/24; B21K 021/06 |
Field of Search: | 102/389,474,476,491,493,494,495 219/121.39,121.67,121.68,121.69 29/1.2,1.21,416 228/57,170,196 |
1203062 | Oct., 1916 | Semple | 102/389. |
2382277 | Aug., 1945 | Whitesell, Jr. | 102/389. |
2393275 | Jan., 1946 | Whitesell, Jr. | 102/491. |
2458576 | Jan., 1949 | Etten | 102/389. |
2673730 | Mar., 1954 | Hupp. | |
2798431 | Jul., 1957 | Semon et al. | 102/495. |
3434422 | Mar., 1969 | Herman et al. | 29/1. |
3768414 | Oct., 1973 | Polcha. | |
3855933 | Dec., 1974 | Messineo. | |
4398467 | Aug., 1983 | Leigh | 102/491. |
4456705 | Oct., 1985 | Langenohl et al. | 102/520. |
4570318 | Feb., 1986 | Kish | 29/173. |
4590652 | May., 1986 | Harwood | 228/170. |
4770100 | Sep., 1988 | Gunthner et al. | 102/476. |
Foreign Patent Documents | |||
0030809 | Nov., 1984 | EP. | |
2837638 | Mar., 1979 | DE | 102/491. |
3221565 | Dec., 1982 | DE. | |
8427781.5 | May., 1985 | DE. | |
8427962.1 | May., 1985 | DE. | |
3624330 | Sep., 1987 | DE. | |
792362 | Oct., 1935 | FR. | |
2312009 | Dec., 1976 | FR | 102/491. |
2402003 | Mar., 1979 | FR. | |
675475 | Dec., 1987 | CH. |
U.S. Statutory Invention Registration H238, Mar. 3, 1987, Adams. |